Home / 1,862.15-2,569.90-1,231.58

Finding the Fourth Proportional to 1,862.15, 2,569.90 and 1,231.58

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Solution

The fourth proportional to 1,862.15, 2,569.90 and 1,231.58 is: 1,699.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.15 : 2,569.90 = 1,231.58 : x
  2. Step 2: Convert to fraction form
    1,862.15/2,569.90 = 1,231.58/x
  3. Step 3: Cross multiply
    1,862.15x = 2,569.90 × 1,231.58
  4. Step 4: Simplify right side
    1,862.15x = 3,165,031.28
  5. Step 5: Solve for x
    x = 3,165,031.28/1,862.15
  6. Step 6: Final answer
    x = 1,699.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.